Tire-rim manipulator.



A. A. FRIESTEDT.

TIRE RIM MANIPULATOR.

APPLICATION men JAN. 3. 1916.

V 1,25 ,30 Patented July 31, 1017.

2 SHEETS-SHEET I.

A. A. FRJESTEDT TIRE Rm! MANIPULATOR.

APPLICATION men MN. 3. 191a.

Patented July 31, 1917.

2 SHEETS-SHEET 2.

ARTHUR A. FRIE STED'I, OF CHICAGO, ILLINOIS, ASSIGNOB TO FRIESTEDT MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ems-2am MAN'IPULA'IOB.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed January 3, 1916. Serial No. 69,811.

ing the diameter of the rim so that the tire.

can be readily removed and replaced.

There are at the present time several types of demountable rims on'the market, among which is a rim known as the Baker rim. The joint of this rim extends diagonally thereacross for, the purpose of permitting one end of the rim to be pulled laterally from the tire after the locking bar Wl'llCil engages a plurality of lugs on each end of the rim has been removed. The tire nipple is disposed adjacent to one end of the rim, and so far as I am aware the presence of the nipple in this location has prevented pulling one end of the rim inside the other to reduce the diameter of the tire since such an o eration would result in injury to the nipp e.

One of the primary objects of my present invention is the provision of the tool or, as I term it, a tire rim manipulator, by means of which this type of rim may be contracted to reduce its diameter so as to allow removal and replacement of the tire, the contraction of the rim being eifected without injury to the tire nipple.

Another object of my invention is to provide a construction which will pull one end of the rim straight over the. other so that the usual twisting and distortion which takes place in rims of this type upon removal from the tire is entirely eliminated.

Other objects and advantages of my invention will be readily appreciated as the same becomes better understood by reference to the following description when considered in connection with the accompanying drawings. Referring to the drawings,-

Figure 1 is a fragmentary side elevation of a tire rim and tire thereon, showing my manipulator in the first position in which it is applied to the rim;

Fig. 2 is a similar view showing the position of the parts after the rim joint has been broken;

.Fig. 3 is a similar view showing the application of my tool to the rim for the purpose of further overlapping the ends;

Fig. 4 is a similar view showing the position of the parts when the ends are overlapped;

gig. 5 is a perspective view of an adapter; an

Fig. 6 is a fragmentary planview of a Baker rim showing the style of lock employed.

On the drawings reference character 7 indicates generally a tire-rim of the Baker type, the two ends of which abut against each other as shown in Fig. 6 on'a line extending diagonally across the rim, this being the rim joint. The ends of therim are provided in proximity to the joint with lugs 9, 11, 12 and 13 respectively, extending radially inwardly from the rim, and the oint is normally locked by a plate or bar 14 provided with apertures which fit over the lugs and hold the rim ends in alinement as shown in Fig; 6. It will be observed that the lugs 12- and 13 are located a little farther distant from the joint 8 than the lugs 9 and 11, and between the lug 12 and the joint the rim is provided with an aperture, as is also the bar 14, adapted to receive the usual nipple 15 of the pneumatic tire 16.

It will be manifest that after the rim has been removed from the wheel the ends can be readily released from each other by removing the locking bar 14 from the rim lugs. It has been the practice heretofore to then free the rim from the tire .by pulling the left hand end, viewing Fig. 6, laterally of the tire, the joint 8 being disposed on an incline to permit this lateral. movement of one end. It is, however, very difficult to release the rim from the tire in this manner and furthermore lateral bending and twisting of the rim distorts it so. that it does not thereafter reassume its original position but remains slightly distorted, with the result that the rim and the tire carried thereby do not run true on the wheel.

My present invention is designed to free the rim from the tire by overlapping the rini ends without distorting the rim or twisting it latera l out of its original plane. ll ith this end in 'view 1 have designed amember which term an adapter, the some being shown in perspective in Fig. 5. This adapter, indicated generally by reference character 1?, COIDDTlSOS a metal block or member shaped to engage the inner face oi a tire rim and provided on its bottom apertures 18 and 19 adapted to lit over the lugs 13 and 12 respectively. and an aperture 21 adopted to lit over the tire nipple. The top 22 of the member covers the nipple so that it is protected from iniury when the rim ends are overlapped. The end of the member beyond the aperture 21 is shaped to "present an inclined face 23 which con forms in transverse alinement with the incline of the rim oint 8 and is inclined rearwardly from bottom to too so as "to "present an inclined surface up which opposed end of th tire rim may travel so as "to pass the tire nipple without injuring the some. liearwardly of the top have formed a "plurality" of shoulders 24:. at the bottoms of which the metal is turned inwardly as lllfll."

- sated at to form bearing" surfaces for the toe of a shoe which will be later described.

The adapter. just described, is used prelierably in connection with a tire tool or rim contractor of the general type disclosed in In prior Patent. 1.162.450, Nov. 30.. i915 and application Ser. l lo. 69.812 filed Jan. 3, 1916, and consists of a handle 26 having a shoe 27 pivoted to one end th reof and a lockin -1f llOOl'Z i8 pivoted to the opposite end, pair of link bars 253 being piroted tothe handle at 31 interniedi its ends. said linl: bars being pivotally attached at 352 to a pair of book n embers 33 engage beneath edges of a tire rim, These hoolr members each have a forwardly profleeting arm 3% which arms A pii'otall r connected together by a toe or thrust bar 35 ere tending transversely between the in the operation of my improved manipulat-or, the rim with the tire thereon has been removed from the wheel the locking bar is is first talzen off. The adapter merober 1? is then positioned over the lugs 12, 13 and the nipple 15 as shown Fig l. The hoolt members 38 are l )8. earth the flanges of the opposed end o1 the rim, the shoe 2'? is turned into substantial slineinent with the handle and its lower end is positioned just back of the shoulders 2 upon the bearing portions of the block 1?, all shown in Fig. 1 the thrust bar being disposed on top of the nember 17. The handle is then swung about the end of le shoe 27 as a pivot, in a clockwise direction into the po "tron shown W Q This movement lifts ihe er i by the hooks 3-3. on.

the inclined face and disposes it upon the top 2-2 of the member 17, as shown in Fig. 2. 4%; will be manifest that this operation breaks the rim joint and partially laps one end of the rim over the other. The tool is nextpositioned as shown in Fig. 3 by sliding the hooks S3 baclrwardly upon the rim until the thrust bar 35 engages behind the lug 9 and the shoe 2'? i tilted so that it rests upon the rear end of the adapter member and upon the rim with its end abutting against the shoulders 2i. The handle 26 is now swung in a clockwise direction. thereby pulling the end of the rim overlying the adapter memher to the right over the shoe 2'? into the position shown in at. thereby contracting and reducing the diameter of the rim so that the tire can be readily removed and replacedv llhen the handle has been moved to completely contract the rim its outer end will be suilicientl; close to the rim to permit the hook 28 to be engaged over the edge of the rim. thereby locking the rim in contracted position. The tire may now be removed and replaced. and upon releasing the hook 98 from the rim the overlapped end may be forced back into its original position.

It will be observed that by means of my improved manipulator l am enabled to contract the rim without distorting it laterally and at the some time without injuring or even touching the tire nipple lying quite close to the rim joint. l 'he nipple is all times adequately protected and the inclined face or the adapter member guides the rim upwardly and over the tire nipple so that the complete contraction of the rim may be readily elicctcd without injury either the the or the rim.

I claim:

1.. A tire rini niz'uiipulaton comprising ir niber constructed to engage wit the ln on the inner face oi a t' rim e; V- having on inclined face adapted to guide the o}- posed end of a tire rim upwardly over the tire nipple and also having a shoulder from said "face. and means adapted engage the opposed end oi? the tire rini 221i said shoulder for forcing said end over said member.

A device of the character descri coinpri ing member adopted to engage the inn-or face of a. tire rim and cover the tire nipple. said member having an inclined face at one end. thereof, and shoulder spaced from said face.

3. A device of the character describe comp ising a member constructed to engag the inner face of a tire rim at one end there of and to receive and project inwardly beyond the inwardl; projecting end of s tire nipple so as to protect nipple from. injury by the other end ,f the rim when moved overlapped "cos member heri eee eee ing an inclined face adapted to facilitate movement of said other end into overlapped position. I

4. A device cf the character described, 5 comprising a member constructed to engage the inner face 0f a tire rim at one end thereof, said member being shaped to engegcwith the rim locking device on said rim end whereby the member is held againsb displacement, said member being also shaped to receive and extend over the inner end of the tire nipple and having at its end an inclined guiding face adapted to facilitate movement of the opposed end of the tire rim into overlapped position.

ARTHUR A. FRIESTEDT, 

